Device for low priority handling

ABSTRACT

The embodiments herein relates to a method in a transceiver ( 110 ) for enabling traffic you prioritizing in a wireless communication system ( 100 ). The transceiver ( 110 ) is configured to transmit traffic to a first communication node ( 101, 120 ). The transceiver ( 110 ) transmits a message to the first communication node ( 101, 120 ). The message comprises an indicator indicating that the transmitted traffic tolerates a delay, enabling traffic prioritizing in the wireless communication system ( 100 ).

CROSS-REFERENCE

This application claims the benefit of Provisional Application Nos.61/329,774 filed Apr. 30, 2010 and 61/329,645 filed Apr. 30, 2010, theentire contents of which are hereby incorporated by reference herein.

TECHNICAL FIELD

The embodiments herein disclose an improved transceiver and node inwireless communications systems for handling of low priority traffic.

BACKGROUND

In a typical cellular communication system, also referred to as awireless communications network, wireless terminals, also known asmobile stations and/or User Equipment units (UEs) communicate via RadioAccess Networks (RAN) to a Core Network (CN). The wireless terminals maybe mobile stations or user equipments such as mobile telephones alsoknown as cellular telephones, laptops with wireless capability, and thusmay be, for example, portable, pocket, hand-held, computer-included, orcar-mounted mobile devices which communicate voice and/or data withradio access network. The wireless terminals may also be communicationdevices or modules that are part of other electronic equipments such asvideo or photographic camera equipment, electronic photo frames, cardiacsurveillance equipment, intrusion or other surveillance equipment,weather data monitoring systems, car or transport communicationequipment, etc.

The radio access network is the network that is located between thewireless terminals, and the core network. RAN provides radio bearersbetween the core network and the wireless terminals for the transport ofdata and signaling, thus enabling wireless terminals to access servicesoffered e.g. by Internet. The main RAN function includes establishment,maintenance, and termination of radio channels; radio resourcemanagement; and mobility management. The radio access network covers ageographical area which is divided into cell areas, with each cell areabeing served by a base station, e.g. a Radio Base Station (RBS), whichin some radio access networks is also called evolved NodeB (eNB), NodeB,B node or base station. A cell is a geographical area where radiocoverage is provided by the radio base station at a base station site.Each cell is identified by an identity within the local radio area,which is broadcast in the cell. The base stations communicate over theair interface operating on radio frequencies with the user equipmentswithin range of the base stations.

In some versions of the radio access network, several base stations aretypically connected, e.g. by landlines or microwave, to a Radio NetworkController (RNC), as in 3^(rd) Generation (3G), i.e. Wideband CodeDivision Multiple Access (WCDMA). The radio network controllersupervises and coordinates various activities of the plural basestations connected thereto. In 2^(nd) Generation (2G), i.e. GlobalSystem for Mobile communication (GSM), the base stations are connectedto a Base Station Controller (BSC). The network controllers aretypically connected to one or more core networks.

Machine-to-Machine (M2M) is a term referring to technologies that allowboth wireless and wired systems to communicate with other devices of thesame ability, for example computers, embedded processors, smart sensors,actuators and mobile devices may communicate with one another, takemeasurements and make decisions, often without human intervention

The Machine to Machine traffic, “M2M” traffic, is becoming increasinglycommon in wireless communication systems, such as GSM, WCDMA and LongTerm Evolution (LTE). M2M traffic is, for example, used in such diverseapplications as electricity meters, home alarms, signaling fromvehicles, such as cars, trucks etc.

A problem in this context is that the number of users of wirelesssystems will grow greatly, which will create a need for avoidingcongestion. For example if all electricity meters in an area attempt toreport their readings to a central or collecting server at one and thesame time, and that point in time happens to be at rush hour for otherusers, for example at 5 o'clock in the afternoon, there will be aproblem with congestion and overload of the system. Congestion andoverload affects all users of the system, both machines and human users.

SUMMARY

The objective of embodiments herein is therefore to obviate at least oneof the above disadvantages and to provide a solution to the problem ofcongestion and overload caused by Machine to Machine traffic.

According to a first aspect, the objective is achieved by a method in atransceiver for enabling traffic prioritizing in a wirelesscommunication system. The transceiver is configured to transmit trafficto a first communication node. The transceiver transmits a message tothe first communication node. The message comprises an indicatorindicating that the transmitted traffic tolerates a delay, enablingtraffic prioritizing in the wireless communication system 100.

According to a second aspect, the objective is achieved by a method infirst communication node for enabling traffic prioritizing in a wirelesscommunications system. The first communication node is configured toreceive traffic from a transceiver. The first communication nodereceives a message from the transceiver. The message comprises anindicator indicating that the received traffic tolerates a delay,enabling traffic prioritizing in the wireless communication system.

According to a third aspect, the objective is achieved by a transceiverfor enabling traffic prioritizing a wireless communications system. Thetransceiver comprises a transmitting unit configured to transmit trafficto a first communication node, and to transmit a message to the firstcommunication node. The message comprises an indicator indicating thatthe transmitted traffic tolerates a delay, enabling traffic prioritizingin the wireless communication system.

According to a fourth aspect, the objective is achieved by a firstcommunication node for enabling traffic prioritizing in a wirelesscommunication system. The first communication node is configured toreceive traffic from a transceiver. The first communication nodecomprises a receiving unit configured to receive a message from thetransceiver. The message comprises an indicator indicating that thereceived traffic tolerates a delay, enabling traffic prioritizing in thewireless communication system.

The embodiments herein afford many advantages, for which anon-exhaustive list of examples follows:

An advantage of the embodiments herein is that the delay tolerantindicator makes it possible to provide an intelligent request selectionof requests which does not affect Human To Human communication (H2H).

Another advantage is that Machine to Machine communication considered asdelay tolerant does not create congestion and overload. The delayindicator provides a protection mechanism for the network.

The delay tolerant indicator also provides an early detection andprotection mechanism for the communication system, e.g. RAN, Corenetwork. As the delay tolerant indicator is sent by the device itprovides the means for an early detection mechanism in the communicationsystem, e.g. RAN, Core network, of delay tolerant traffic such that inan already congested or overloaded communication system no further loadis induced, e.g. signaling to other nodes, security authentication, todetermine the relative priority of the request.

Another advantage is that delay tolerant indicator makes it possible toprovide an intelligent request selection of requests made by varying M2Mapplications with differing delay tolerant characteristics.

A further advantage is that dimensioning of mobile networks becomeseasier as traffic peaks caused by delay tolerant traffic need not bedimensioned for, but may be handled by the congestion and overloadcontrol mechanism provided by the delay indicator instead.

Another advantage is that mobile operators may differentiate theirsubscriptions and offer lower cost subscriptions for delay tolerantpurposes such as Machine to Machine communication.

The embodiments herein are not limited to the features and advantagesmentioned above. A person skilled in the art will recognize additionalfeatures and advantages upon reading the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The embodiments herein will be described in more detail in thefollowing, with reference to the appended drawings, in which

FIG. 1 is a schematic block diagram illustrating embodiments of awireless communication system.

FIG. 2 is a combined signaling diagram and flow chart illustratingembodiments of a method.

FIG. 3 is a flow chart illustrating embodiments of a method.

FIG. 4 is a flow chart illustrating embodiments of a method in atransceiver.

FIG. 5 is a block diagram illustrating embodiments of a transceiver.

FIG. 6 is a flow chart illustrating embodiments of a method in a firstcommunication node.

FIG. 7 is a block diagram illustrating embodiments of a firstcommunication node.

DETAILED DESCRIPTION

FIG. 1 shows a schematic view of parts of a wireless communicationssystem 100 in which the embodiments herein are applied. The embodimentsherein will be described in the following with terminology from a LTEsystem, but it should be made clear that this is merely in order tofacilitate the reader's understanding of the description, and should beseen as an example only. The embodiments herein may equally well beapplied in other types of wireless communications systems, such as forexample WCDMA systems and GSM systems.

The system 100 shown in FIG. 1 comprises a node. In some embodiments,the node may serve a cell (not shown). The node may be a network unitcapable to directly or indirectly communicate over a radio carrier witha transceiver. The node may be for example a Base Transceiver Station(BTS), a BSC or a Serving General Packet

Radio Service Support Node (SGSN) in a GSM system, a NodeB, a RNC orSGSN in a Wideband Code Division Multiple Access (WCDMA) system, aneNodeB or a Mobility Management Entity (MME) in an LTE system. The nodeis shown by way of example as an LTE eNodeB 101 in FIG. 1.

The transceiver may be a user equipment, for an LTE system, but in otherembodiments it may also be a user equipment for a WCDMA system, or aMobile Station, an MS, for a GSM system. In the following descriptionand in the figures, a user equipment 110 is used as an example. The userequipment 110 is present in the cell. Even though FIG. 1 illustratesonly one eNB 101 and only one user equipment 110, a person skilled inthe art will understand that the system 100 may comprise a plurality ofeNBs 101 and a plurality of user equipments 110.

The user equipment 110 may be any suitable communication device orcomputational device with communication capabilities capable tocommunicate with a base station over a radio channel, for instance butnot limited to mobile phone, smart phone, Personal Digital Assistant(PDA), laptop, MP3 player or portable DVD player (or similar mediacontent devices), digital camera, or even stationary devices such as aPC. A PC may also be connected via a mobile station as the end stationof the broadcasted/multicasted media. The user equipment 110 may also bean embedded communication device in e.g. electronic photo frames,cardiac surveillance equipment, intrusion or other surveillanceequipment, weather data monitoring systems, vehicle, car or transportcommunication equipment, etc. The user equipment 110 is referred to asUE in some of the figures.

The wireless communication system 100 comprises, as mentioned earlier, aradio access network 115 and a core network 118. The radio accessnetwork comprises a number of nodes, such as BSC (not shown) and a RNC(not shown). The core network 118 also comprises a plurality ofentities, such as for example a MME 120. When a user equipment 110registers with the core network 118, the MME 120 request subscriber datafrom a home subscriber server and performs authentication of the userequipment's 110 Subscriber Identity Module (SIM) card. The MME 120 alsotakes care of signaling to and from the user equipment 110, by means ofsignaling protocols referred to as Non Access Stratum (NAS) signaling.The MME 120 also takes care of handover signaling when a user equipment110 moves between two radio access areas or networks.

As mentioned initially, the embodiments herein improve the situation forMachine to Machine applications in wireless communications systems 100,M2M applications for short. The growing use of M2M applications increasethe risk of traffic congestion in the systems, especially if, forexample, a large number of M2M applications have been programmed bytheir owners or by the designer of the system to transmit reports atcertain points in time.

One way of avoiding such congestion is by recognizing the fact that manyM2M applications are not time critical, i.e. that traffic from devicescomprising the M2M applications can be handled with low priority.Naturally, an M2M application such as a home alarm system is extremelytime critical, while other M2M systems or messages such as, for example,electricity meters which submit their readings, are much less timecritical, i.e. they are in other terms “delay tolerant”.

In some M2M applications, the traffic may be either delay tolerant ornot. For example, the home alarm mentioned previously is not delaytolerant when transmitting an alarm to a central, but is delay tolerantwhen transmitting readings of meters or other such information. For thisreason, a user equipment may be arranged to dynamically indicate in amessage if a request for resources is delay tolerant or not.

The embodiments herein for enabling traffic prioritizing in a wirelesscommunication system 100 according to some embodiments will now bedescribed with reference to the combined signaling diagram and flowchartdepicted in FIG. 2 and the flow chart depicted in FIG. 3 illustratingthe method, and with reference to FIG. 1 depicting the communicationsystem 100. The method comprises the following steps, which steps may aswell be carried out in any suitable order than described below.

Step 201 and Step 301

The user equipment 110 transmits a message to the eNB 101 comprising anindicator indicating that the UE 110 is delay tolerant. The indicatormay be a flag, e.g. a low access priority flag. The indicator may alsobe represented by a numeric value representing the relative priority,i.e. extent of delay tolerance, at the access. For example varying M2Mapplications, e.g. utility meter versus a health care monitoring device,may have differing delay tolerant characteristics that may berepresented in the value sent in the indicator.

The term “delay tolerant” here means that the traffic may tolerate adelay in transmission which exceeds a predefined time limit which isknown within the system 100.

The indicator indicates of whether or not traffic from the userequipment 110 is delay tolerant when it attempts to connect to thesystem 100. In other words, the indicator classifies the user equipment110 as a delay tolerant device. In some embodiments, the indicator maybe signaled in a so called access request message, i.e. a message sentby the user equipment 110 indicating that it wishes to establish aconnection to the network 100. In some embodiments, the indicator, i.e.the information that a message, i.e. “payload data”, is delay tolerantmay be comprised in the message, i.e. “payload data”, itself.

The indicator, e.g. the low access priority flag, may be preconfiguredlocally in the user equipment 110 for example upon production of theuser equipment 110 or loaded into the user equipment 110 afterproduction, for example by configuring the indicator in the SIM cardassociated with the user equipment 110.

In some embodiments, the user equipment 110 may dynamically indicate ina message if the user equipment 110 is delay tolerant or not.

Step 202

The eNB 101 receives the message, and extracts or recognizes theindicator indicating that the user equipment 110 is delay tolerant.Thus, the eNB 101 has information indicating that traffic from the userequipment 110 to the system 100 may tolerate a delay in transmissionwhich exceeds a predefined limit. The predefined limit may for examplebe 15 minutes or 20 minutes.

Step 203 and 303

Upon receiving the information that the traffic from the user equipment110 is delay tolerant, the eNodeB 101, may react in a number of ways.The information that the traffic from the user equipment 110 is delaytolerant may be comprised in an indicator or a flag.

Step 203 a, 302 and 303 a

Step 203 a is an embodiment of an alternative of eNB 101 response to thedelay tolerant indicator. The eNB 101 may transmit a message to the userequipment 110 in reply to the message received in step 201. The replyindicating that the user equipment 110 should retransmit its messageafter at least a certain period of time, the period of time beingindicated in the reply message.

In one embodiment, in order to ensure that all user equipments 110 willnot retransmit their messages, e.g. the access request message or thepayload data message, at the same point in time, the eNodeB 120 maytransmit a reply message to the user equipment 110 that it shouldtransmit a new message or retransmit the previous message after at leasta certain amount of time. This amount of time may be determined randomlyin an interval starting from the predefined limit. In other words, ifthe predefined limit is, for example, 15 minutes, the new message willbe transmitted at a random point in time starting in 15 minutes. In onesuch embodiment, the eNodeB 101 is arranged to let the interval extendto an upper limit which is predefined, so that the random point in timeat which the new/retransmitted message is transmitted is between astarting and a finishing point in time, for example starting at 15minutes “from now” and finishing 2 hours “from now”.

Step 203 b and 301

In some embodiments, step 203 b is performed after step 203 a. The userequipment 110 retransmits the message after at least a certain period oftime, the period of time being indicated in the reply message.

Step 203 c and 302

Step 203 c is an embodiment of an alternative of eNB 110 response to thedelay tolerant indicator. The eNB 110 may forward the access requestmessage to another node in the system 100. The another node may be inthe radio access network 115 or in the core network 118, and may forexample be the MME 120, a Base Station Controller or a Radio NetworkController. The MME 120 is used as an example in FIGS. 2 and 3. Othersuitable nodes in the radio access network 115 or the core network 118may also be applicable.

Step 203 d and 303 d

Step 203 d and 303 d is an embodiment of an alternative of reactionperformed by the eNB 110 in response to the delay tolerant indicator.The eNB 101 may take no further action, i.e. to “drop” the accessrequest message.

Step 204

Step 204 is a step performed after steps 203 c, 302 and 303 c. The MME120 receives the forwarded message from the eNB 110, and decides how toreact to the received message. Upon receiving the information that thetraffic from the user equipment 110 is delay tolerant, the MME 120 mayreact in a number of ways.

Step 204 a, 301, 302, 303 a and 304 a

Steps 204 a and 304 a and 303 a are an embodiment of an alternativereaction from the MME 120 upon receipt of the information that thetraffic from the user equipment 120 is delay tolerant. The MME 120 maytransmit a message to the use equipment 110 in reply to the messagereceived in steps 201 and 301 and forwarded in steps 203 c and 302 or303 c. The reply message may in some embodiments be transmitted via theeNB 101. The reply indicates that the user equipment 110 shouldretransmit its message after at least a certain period of time, theperiod of time being indicated in the reply message.

In one embodiment, in order to ensure that all user equipments 110 willnot retransmit their messages, e.g. the access request message or thepayload data message, at the same point in time, the MME 120 maytransmit a reply message to the user equipment 110 that it shouldtransmit a new message or retransmit the previous message after at leasta certain amount of time. This amount of time may be determined randomlyin an interval starting from the predefined limit. In other words, ifthe predefined limit is, for example, 15 minutes, the new message willbe transmitted at a random point in time starting in 15 minutes. In onesuch embodiment, the MME 120 is arranged to let the interval extend toan upper limit which is predefined, so that the random point in time atwhich the new/retransmitted message is transmitted is between a startingand a finishing point in time, for example starting at 15 minutes “fromnow” and finishing 2 hours “from now”.

Step 204 b and 301

In some embodiments, step 204 b is performed after step 204 a. The userequipment 110 retransmits the message after at least a certain period oftime, the period of time being indicated in the reply message.

Step 204 d and 304 d

In some embodiments, steps 204 d and 304 d is an alternative reactionfrom the MME 120 upon receipt of the information that the traffic fromthe user equipment 120 is delay tolerant, i.e. that the user equipment120 is a delay tolerant device. The MME 120 may take no further action,i.e. it “drops” the message, .e.g. the access request message.

The method described above will now be described seen from theperspective of the transceiver 110. FIG. 4 is a flowchart describing thepresent method in the transceiver 110 for enabling traffic prioritizingin a wireless communication system 100. The transceiver 110 isconfigured to transmit traffic to a first communication node 101, 120.The MME 120 may act as a first communication node e.g. when a delaytolerant indicator e.g. a low access priority flag, is passed in anon-access stratum (NAS) protocol layer transparently through an eNB101. In some embodiments, the transceiver 110 is a user equipment andthe first communication node 101, 120 is an eNode B. In someembodiments, the first communication node 101, 120 is a mobilitymanagement node, such as a MME. The method comprises the following stepsto be performed by the transceiver 110:

Step 401

This step corresponds to steps 201, 203 c, 301 and 302 in FIGS. 2 and 3.

The transceiver 110 transmits a message to the first communication node101, 120. The message comprises an indicator indicating that thetransmitted traffic tolerates a delay.

In some embodiments, the transmitted traffic tolerates a delay whichexceeds a limit. The limit may be predetermined in the transceiver 110

In some embodiments, the indicator is predefined in the transceiver 110or obtained from a third communication node (not shown). In someembodiments, the third communication node may be an operator, a MME 120,a home subscriber server (HSS) or any suitable node comprised in thesystem 100. In some embodiments, the indicator is dynamically obtainedfrom the third communication node.

Step 402

This step corresponds to step 203 a in FIG. 2 and step 303 a and 304 ain FIG. 3.

In some embodiments, the transceiver 110 receives a reply message fromthe first communication node 101, 120 in reply to said transmittedmessage. The reply message indicates retransmission of the transmittedmessage, and that the retransmission should be performed after a timeperiod from the transmission of the transmitted message. The time periodis indicated in the reply message.

In some embodiments, the time period is determined in an intervalstarting from the limit. The limit refers to the delay limit which thedelay tolerant traffic exceeds, as mentioned in step 401. In someembodiments, the time is determined randomly in the interval.

Step 403

This step corresponds to step 203 b in FIG. 2 and step 301 and 302 inFIG. 3.

In some embodiments, this step 403 is performed after step 402. Thetransceiver 110 may retransmit the transmitted message to the firstcommunication node 101, 120 after the time period.

To perform the method steps shown in FIG. 4 for enabling trafficprioritizing a wireless communications system 100, the transceiver 110comprises a transceiver arrangement as shown in FIG. 5. The transceiver110 comprises a transmitting unit 501 configured to transmit traffic toa first communication node 101, 120, and to transmit a message to thefirst communication node 101, 120. The message comprises an indicatorindicating that the transmitted traffic tolerates a delay, enablingtraffic prioritizing in the wireless communication system 100. In someembodiments, the transmitted traffic tolerates a delay which exceeds alimit. In some embodiments, the indicator is predefined in thetransceiver 110 or obtained from a third communication node. In someembodiments, the third communication node may be an operator, a MME 120,a home subscriber server (HSS) or any suitable node comprised in thesystem 100. In some embodiments, the indicator dynamically obtained fromthe third communication node 120.

In some embodiments, the transceiver 110 is a user equipment and thefirst communication node 101, 120 is an eNode B. In some embodiments,the first communication node 101, 120 is a mobility management node.

In some embodiments, the transceiver 110 comprises a receiving unit 503configured to receive a reply message from the first communication node101 in reply to said transmitted message. The reply message indicatesretransmission of the transmitted message. The retransmission is to beperformed after a time period from the transmission of the transmittedmessage. The time period is indicated in the reply message.

In some embodiments, the transmitting unit 501 is further configured toretransmit the transmitted message to the first communication node 101,120 after the time period. In some embodiments the time period isdetermined in an interval starting from the limit. In some embodiments,the time is determined randomly in the interval.

The method described above will now be described seen from theperspective of the first communication node 101, 120. FIG. 6 is aflowchart describing the present method in the first communication node101, 120 for enabling traffic prioritizing in a wireless communicationssystem 100. As mentioned above, the first communication node 101, 120 isconfigured to receive traffic from a transceiver 110. In someembodiments, the transceiver 110 is a user equipment. The methodcomprises the steps to be performed by the first communication node 101,120.

Step 601

This step corresponds to steps 201 and 202 in FIG. 2 and steps 301 and302 in FIG. 3.

The first communication node 101, 120 receives a message from thetransceiver 110. The message comprises an indicator indicating that thereceived traffic tolerates a delay, enabling traffic prioritizing in thewireless communication system 100.

Step 602

This step corresponds to steps 203 c in FIG. 2, and steps 302 and 303 cin FIG. 3.

In some embodiments, the first communication node 101 transmits orforwards the received message to a second communication node 120. Thesecond communication node 120 may be a mobility management node, such asfor example a Mobility Management Entity (MME).

Step 603

This step corresponds to steps 203 a and 204 a in FIG. 2 and steps 301and 302 in FIG. 3.

Step 603 may be performed after step 602 or as an alternative to step602, i.e. instead of step 602. In some embodiments, the firstcommunication node 101, 120 transmits a reply message to the transceiver110 in reply to said transmitted message. The reply message indicatesretransmission of the transmitted message. The retransmission takesplace after a time period from the transmission of the transmittedmessage. The time period is indicated in the reply message.

In some embodiments, step 603 is performed after step 602. Then,transmission of the reply message to the transceiver 110 is a forwardingof the reply message from the second communication node 120.

Step 604

This step corresponds to steps 203 b and 204 b FIG. 2 and steps 301 and302 in FIG. 3.

In some embodiments, step 604 is performed after step 603. The firstcommunication node 101, 120 may receive a retransmission of thetransmitted message from the transceiver 110 after the time period. Themethod then commences from step 601 again.

Step 605

This step corresponds to steps 203 d and 204 d in FIG. 2 and steps 303 dand 304 d in FIG. 3.

In some embodiments, step 605 is performed after step 602 or as analternative to steps 602, 603 and 604. The first communication node 101,120 may drop the received message.

In some embodiments, first communication node is an eNodeB 101 and thesecond communication node is a mobility management node, such as aMobility Management Entity (MME) 120. In some embodiments the firstcommunication node is a mobility management node, such as a MobilityManagement Entity (MME) 120.

To perform the method steps shown in FIG. 6 for enabling trafficprioritizing in a wireless communication system 100 the firstcommunication node 101 comprises a first communication node arrangementas shown in FIG. 7. As mentioned above, the first communication node101, 120 is configured to receive traffic from a transceiver 110. Thefirst communication node 101, 120 comprises a receiving unit 701configured to receive a message from the transceiver 110. The messagecomprises an indicator indicating that the received traffic tolerates adelay, enabling traffic prioritizing in the wireless communicationsystem 100. In some embodiments, the receiving unit 701 is furtherconfigured to receive a retransmission of the transmitted message fromthe transceiver 110 after the time period.

In some embodiments, the first communication node further comprises atransmitting unit 703 configured to transmit a reply message to thetransceiver 110 in reply to said transmitted message. The reply messageindicates retransmission of the transmitted message after a time periodfrom the transmission of the transmitted message. The time period isindicated in the reply message. In some embodiments, the transmittingunit 703 is further configured to transmit the received message to asecond communication node 120.

In some embodiments, the transmitting unit 703 or the receiving unit 701is further configured to drop the received message, depending oninternal state e.g. congestion or overload or other trafficprioritization in the first communication node 101.

The embodiments herein for enabling traffic prioritizing in a wirelesscommunication system 100 may be implemented through one or moreprocessors, such as a processor 505 in the transceiver arrangementdepicted in FIG. 5 and a processor 705 in the first communication nodearrangement depicted in FIG. 7, together with computer program code forperforming the functions of the embodiments herein. The processor may befor example a Digital Signal Processor (DSP), Application SpecificIntegrated Circuit (ASIC) processor, Field-programmable gate array(FPGA) processor or micro processor. The program code mentioned abovemay also be provided as a computer program product, for instance in theform of a data carrier carrying computer program code for performing theembodiments herein when being loaded into the transceiver 110 and/or thefirst communication node 101, 120. One such carrier may be in the formof a CD ROM disc. It is however feasible with other data carriers suchas a memory stick. The computer program code can furthermore be providedas pure program code on a server and downloaded to the transceiver 110and/or first communication node 101, 120 remotely.

The embodiments herein are not limited to the above described preferredembodiments. Various alternatives, modifications and equivalents may beused. Therefore, the above embodiments should not be taken as limitingthe scope of the embodiments herein, which is defined by the appendedclaims.

It should be emphasized that the term “comprises/comprising” when usedin this specification is taken to specify the presence of statedfeatures, integers, steps or components, but does not preclude thepresence or addition of one or more other features, integers, steps,components or groups thereof. It should also be noted that the words “a”or “an” preceding an element do not exclude the presence of a pluralityof such elements.

It should also be emphasised that the steps of the methods defined inthe appended claims may, without departing from the embodiments herein,be performed in another order than the order in which they appear in theclaims.

The embodiments herein are not limited to the examples of embodimentsdescribed above and shown in the drawings, but may be freely variedwithin the scope of the appended claims.

The invention claimed is:
 1. A method in a transceiver for enablingmachine to machine (M2M) traffic prioritizing in a wirelesscommunication system, the transceiver being configured to transmit M2Mtraffic to a first communication node, the method comprising:transmitting a message to the first communication node, the messagecomprising an indicator indicating that the transmitted M2M traffictolerates a delay, wherein the message is a request to establish aconnection to the wireless communication system, enabling M2M trafficprioritizing in the wireless communication system, receiving a replymessage from the first communication node in reply to said transmittedmessage, the reply message indicating retransmission of the transmittedmessage after a time period from the transmission of the transmittedmessage, the time period being indicated in the reply message; andretransmitting the transmitted message to the first communication nodeafter the time period; wherein the transmitted M2M traffic tolerates thedelay which exceeds a limit, and wherein the time period is determinedin an interval starting from the limit.
 2. The method according to claim1, wherein the indicator is predefined in the transceiver or obtainedfrom a third communication node.
 3. The method according to claim 1,wherein the transceiver is a user equipment and the first communicationnode is an eNode B, or wherein the transceiver is a user equipment andthe first communication node is a mobility management node.
 4. A methodin a first communication node for enabling machine to machine (M2M)traffic prioritizing in a wireless communications system, the firstcommunication node being configured to receive M2M traffic from atransceiver, the method comprising: receiving a message from thetransceiver, the message comprising an indicator indicating that thereceived M2M traffic tolerates a delay, enabling traffic prioritizing inthe wireless communication system, wherein the message is a request toestablish a connection to the wireless communication system;transmitting a reply message to the transceiver in reply to saidtransmitted message, the reply message indicating retransmission of thetransmitted message after a time period from the transmission of thetransmitted message, which time period being indicated in the replymessage; and receiving a retransmission of the transmitted message fromthe transceiver after the time period; wherein the transmitted M2Mtraffic tolerates the delay which exceeds the limit, and wherein thetime period is determined in an interval starting from the limit.
 5. Themethod according to claim 4, further comprising transmitting thereceived message to a second communication node.
 6. The method accordingto claim 4, further comprising dropping the received message.
 7. Atransceiver for enabling machine to machine (M2M) traffic prioritizing awireless communications system, the transceiver comprising: atransmitting unit configured to transmit M2M traffic to a firstcommunication node, and to transmit a message to the first communicationnode, the message comprising an indicator indicating that thetransmitted M2M traffic tolerates a delay, wherein the message is arequest to establish a connection to the wireless communication system,enabling M2M traffic prioritizing in the wireless communication system;a receiving unit configured to receive a reply message from the firstcommunication node in reply to said transmitted message, the replymessage indicating retransmission of the transmitted message after atime period from the transmission of the transmitted message, which timeperiod being indicated in the reply message; and wherein thetransmitting unit is further configured to retransmit the transmittedmessage to the first communication node after the time period; whereinthe transmitted M2M traffic tolerates the delay which exceeds the limit,and wherein the time period is determined in an interval starting fromthe limit.
 8. A first communication node for enabling machine to machine(M2M) traffic prioritizing in a wireless communication system, the firstcommunication node is configured to receive M2M traffic from atransceiver, the first communication node comprising: a receiving unitconfigured to receive a message from the transceiver, themessagecomprising an indicator indicating that the received M2M traffictolerates a delay, wherein the message is a request to establish aconnection to the wireless communication system, enabling M2M trafficprioritizing in the wireless communication system, a transmitting unitconfigured to transmit a reply message to the transceiver in reply tosaid transmitted message, the reply message indicating retransmission ofthe transmitted message after a time period from the transmission of thetransmitted message, which time period being indicated in the replymessage; and wherein the receiving unit is further configured to receivea retransmission of the transmitted message from the transceiver afterthe time period; wherein the transmitted M2M traffic tolerates the delaywhich exceeds the limit, and wherein the time period is determined in aninterval starting from the limit.